You are creating all the sessions with the same name?
-------- Original message --------
From: Donavan Kienenberger <d...@alaska.edu>
Date: 03/12/2013 20:18 (GMT+00:00)
To: tmux-users@lists.sourceforge.net
Subject: Using tmux to start separate processing scripts on system boot.
Hi, I'm running tmux 1.6 on centos 5 & 6 servers. We have several
processing servers that run non-daemon scripts on boot that process
data. In the past this was done by using cron to start the script in a
screen process at boot and then detach. The scripts need to be started
in a window session as they output data to the terminal as they run.
Screen has issues, I would like to migrate over to tmux. However i'm
getting undesirable results with tmux at boot. I have five separate
scripts that I would like to have running in separate sessions. Tmux
is dumping all the commands from the separate startup scripts into one
session.
Here is a sample crontab of the account running the scripts:
# Crontab for user
#
@reboot /home/user/bin/data_server.cron
@reboot /home/user/bin/status_server.cron
@reboot /home/user/bin/tsched.cron
@reboot /home/user/bin/transfer_local.cron
@reboot /home/user/bin/waitd.cron
Here is a sample of the crontab script that is starting the tmux sessions
each of the crontab script are the same except pointing to different scripts
and startup directories:
# Start the tmux session
tmux new-session -d -s data_server
# Make sure we are in the tumx session
tmux select-pane -t data_server
# Set up the paths and environmental variables.
tmux send-keys "source /home/user/.bashrc" C-m
# Change to the working directory:
tmux send-keys "cd /home/user/bin" C-m
# Run the data server script.
tmux send-keys "/home/user/bin/data_server.bash" C-m
After boot if I list the tmux sessions I only get the first one that was run:
$ tmux ls
data_server: 1 windows (created Tue Dec 3 10:00:07 2013) [80x23]
If I connect to the session I find that all of the cron startup
scripts tried to run in the first tmux session and ignored the
new-session and select-pane commands:
source /home/user/.bashrc
source /home/user/.bashrc
source /home/user/.bashrc
source /home/user/.bashrc
cd /home/user/status/status
cd /home/user/bin/
cd /opt/teras/bin/
/home/user/status/status_server/status_server.rb
/opt/teras/bin/tsched
/home/user/bin/transfer_local.bash
cd /home/user/AVO/bin
/home/user/AVO/bin/data_server.rb
$ source /home/user/.bashrc
$ source /home/user/.bashrc
$ source /home/user/.bashrc
$ source /home/user/.bashrc
$ cd /home/user/AVO/avo-status/avo-status
bash: cd: /home/user/status/status: No such file or directory
$ cd /home/user/bin/
[user@dev-proc bin]$ cd /opt/teras/bin/
[user@dev-proc bin]$ /home/user/status/status_server/status_server.rb
(error removed from stating in the wrong directory)
$ /opt/teras/bin/tsched
I might be able to fix this problem using one crontab script to start
everything, but we would like to keep them as separate crontab scripts
so that they can be individually be turned on and off at startup.
If tmux can be set up right at boot ideally I should be seeing :
$tmux ls
data_server: 1 windows (created Tue Dec 3 10:00:07 2013) [131x41]
tsched: 1 windows (created Tue Dec 3 10:52:34 2013) [131x41]
status_server: 1 windows (created Tue Dec 3 10:52:22 2013) [131x41]
transfer_local: 1 windows (created Tue Dec 3 10:52:29 2013) [131x41]
waitd: 1 windows (created Tue Dec 3 10:52:40 2013) [131x41]
Here is our .tmux.conf script included for reference.
# Change the prefix key from (ctrl b) to (ctrl a)
set -g prefix C-a
unbind C-b
bind C-a send-prefix
# Define the tmux environment
set-option -g default-shell "/bin/bash"
set-option -g default-command "bash -l"
set-option -g default-path $HOME
set-option -g default-terminal "screen-256color"
# Set a reminder for detaching in the bottom of the window
set -g status-right 'ctrl+a d - detach | ctrl+a ? - help (q)'
---------------------------------
Donavan Kienenberger
V-ADAPT Systems Administrator
Volcanic-Ash Detection, Avoidance
and Preparedness for Transportation
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